Patent US3843382A successfully refreshed from Google Patents.
US3843382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information processing article utilizing photodecomposable dihydroaromatic and similar anhydrides
Assignee: Wyeth Holdings LLC
•
Filing: 1972-01-28
•
Granted: 1974-10-22
•
Expires: 1992-01-28
Abstract
Abstract WHERE SUBSTITUENTS R'' MAY BE PHENYL, P-ANISYL, P-CYANOPHENYL, PHENYLETHYNYL, P-PHENYLPHENYL, 1-NAPHTHYL; A BENZO-SUBSTITUENT MAY BE PRESENT AT 1-2, 2-3, 5-6, 6-7 OR 7-8; AND METHYL OR METHOXY SUBSTITUENTS MAY BE PRESENT AT 1, 2, 7 OR 8 POSITIONS. 1,4-(-CO-O-CO-),9,10-DI(R'')-ANTHRACENE 9,10-(-CO-O-CO-),9,10-DI(R'')-ANTHRACENE OR 1. A SUBSTRATE INCORPORATING AN AROMATIC ANHYDRIDE COMPOUND OF THE FORMULA: D R A W I N G
Inventors
- 👤 A Zweig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:23
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/28; C; C07; C07D; C07D313/00; C07D313/02; C07D313/06; C09; C09K; C09K11/00; C09K11/06; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/145; Y10S430/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A SUBSTRATE INCORPORATING AN AROMATIC ANHYDRIDE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
10 words
A SUBSTRATE INCORPORATING AN AROMATIC ANHYDRIDE COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |